2016 WNV Activity by County
Year To Date (Weeks 1 - 39)

(2017-10-22) - Source: http://www.westnile.ca.gov

Total Positive Counties: 37

CountyHuman CasesDead BirdsMosquito SamplesSentinel Chickens
State Totals27612913370301
Alameda-112-
Alpine----
Amador----
Butte19214838
Calaveras----
Colusa2--9
Contra Costa12795
Del Norte----
El Dorado14--
Fresno96180-
Glenn541110
Humboldt----
Imperial----
Inyo----
Kern9-80-
Kings24118-
Lake14394
Lassen----
Los Angeles9211138899
Madera4599-
Marin-5--
Mariposa----
Mendocino----
Merced-51233
Modoc----
Mono----
Monterey1---
Napa-14-
Nevada-2-1
Orange1879382-
Placer5281037
Plumas----
Riverside31431-
Sacramento18409454-
San Benito----
San Bernardino657920
San Diego11256759
San Francisco----
San Joaquin636348-
San Luis Obispo----
San Mateo-115-
Santa Barbara----
Santa Clara18513-
Santa Cruz-23-
Shasta13123
Sierra----
Siskiyou----
Solano-13167
Sonoma-82-
Stanislaus1712256-
Sutter9106832
Tehama5--8
Trinity----
Tulare73257-
Tuolumne----
Ventura232--
Yolo12712583
Yuba941813
State Totals27612913370301